The 6 Best Jaw Pullers

This wiki has been updated 23 times since it was first published in October of 2019. At one point or another, all mechanics, machinists, and millwrights have to remove a rusty pulley or a seized bearing. With the right jaw puller, the task does not need to result in frustration, damaged shafts, or broken assemblies. We have put together a list of the best models available that will satisfy a wide range of needs while providing dependable service for many years. When users buy our independently chosen editorial choices, we may earn commissions to help fund the Wiki.

1. Gearwrench 3627

The Gearwrench 3627 (appx. $113) comes as a set of two and five-ton hubs made of durable carbon steel. The ratcheting claws have been designed to index to the body so that you can install the tool on pulleys without them flopping around and becoming misaligned.

Blow-molded case
Well-machined threads
Great for seized steering knuckles

2. Posi Lock 104

For a quick and painless application, the Posi Lock 104 (about $119) features an adjustable cage that controls the pitch of the jaws with the turn of a handle. The thin profile means that you can squeeze it into cramped spaces like an engine compartment.

Stout center shaft
Five-ton capacity
Heat treated and hardened

3. Stanley Proto J4038

The claws on the Stanley Proto J4038 (around $116) can be bolted at three different anchor points so that you can optimize its starting position. The cast steel has been heat-treated to improve its tensile strength and ensure a long service life.

Reversible for inside pulling
Has a 9-inch reach
Made in the usa

4. Ares 71002

The Ares 71002 (about $36) is specially designed to remove the harmonic balancer and crankshaft pulley off car engines, but it can also be used on large ball bearings. The stout cross section should stand up to even heavily rusted components.

Includes 4 forcing rods
Thick retainer pins
Legs are quite short

5. Mophorn Hydraulic 15T

The Mophorn Hydraulic 15T (about $92) eliminates the need to hand-crank the shaft by incorporating a hydraulic piston that makes removing tough pulleys a painless task. It can be disassembled for easy transportation from home to a job site.

Large actuating handle
Robust threading
Too bulky for auto mechanic work

6. ABN 0302

The ABN 0302 (appx. $29) is a 3-piece set that includes 3, 4, and 6-inch models, which makes this quite a versatile option for the price. The claws and assemblies can be recombined for different reaches and orientations, depending on the task at hand.

Can be used on small flywheels
Poor fit between parts
Rough casting marks

Last updated by Rafael Perez

Rafael Perez is a doctoral candidate in philosophy at the University of Rochester. His primary focus is the metaphysics of time and the philosophy of mind, with a particular interest in artificial intelligence and antirepresentational models of the mind. He has extensive experience as a mechanic, a construction worker, and a general repairman. This has allowed him to gather a wealth of knowledge on automobile repair, auto parts, carpentry, masonry, welding, and the tools used in those trades. In his spare time, he enjoys playing guitar, woodworking, and fishing.

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